163318157 has 4 divisors (see below), whose sum is σ = 163671360. Its totient is φ = 162964956.

The previous prime is 163318153. The next prime is 163318159. The reversal of 163318157 is 751813361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751813361 = 13 ⋅57831797.

It is a cyclic number.

It is not a de Polignac number, because 163318157 - 2² = 163318153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163318153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175907 + ... + 176832.

It is an arithmetic number, because the mean of its divisors is an integer number (40917840).

Almost surely, 2^163318157 is an apocalyptic number.

It is an amenable number.

163318157 is a deficient number, since it is larger than the sum of its proper divisors (353203).

163318157 is an equidigital number, since it uses as much as digits as its factorization.

163318157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353202.

The product of its digits is 15120, while the sum is 35.

The square root of 163318157 is about 12779.5992503678. The cubic root of 163318157 is about 546.6107351974.

The spelling of 163318157 in words is "one hundred sixty-three million, three hundred eighteen thousand, one hundred fifty-seven".